JEE Main 2021 Mathematics question

Let A, B and C be three events such that the probability that exactly one of A and B occurs is (1 – k), the probability that exactly one of B and C occurs is (1 – 2k), the probability that exactly one of C and A occurs is (1 – k) and the probability of all A, B and C occur simultaneously is , where 0 < k < 1. Then the probability that at least one of A, B and C occur is :

• (A)greater than but less than
• (B)greater than Correct
• (C)greater than , but less than
• (D)exactly equal to